UCC35701

ACTIVE

15V VCC, 1A Driver single ended 700KHz voltage mode PWM controller with 13V/9V UVLO, 0C to 70C

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Product details

Parameters

Topology Boost, Buck, Flyback, Forward Control method Feedforward, Voltage VCC (Min) (V) 13 VCC (Max) (V) 15 Duty cycle (Max) (%) 99 UVLO thresholds on/off (V) 13/9 Frequency (Max) (kHz) 700 Operating temperature range (C) 0 to 70 Gate drive (Typ) (A) 1 Features Multi-topology, Soft Start, Synchronization Pin Rating Catalog open-in-new Find other PWM controllers & resonant controllers

Package | Pins | Size

PDIP (N) 14 181 mm² 19.3 x 9.4 SOIC (D) 14 52 mm² 8.65 x 6 TSSOP (PW) 14 32 mm² 5 x 6.4 open-in-new Find other PWM controllers & resonant controllers

Features

  • 700kHz Operation
  • Integrated Oscillator/Voltage Feed Forward Compensation
  • Accurate Duty Cycle Limit
  • Accurate Volt-second Clamp
  • Optocoupler Interface
  • Fault Counting Shutdown
  • Fault Latch off or Automatic Shutdown
  • Soft Stop Optimized for Synchronous Rectification
  • 1A Peak Gate Drive Output
  • 130µA Start-up Current
  • 750µA Operating Current
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Description

The UCC35701/UCC35702 family of pulse width modulators is intended for isolated switching power supplies using primary side control. They can be used for both off-line applications and DC/DC converter designs such as in a distributed power system architecture or as a telecom power source.

The devices feature low startup current, allowing for efficient off-line starting, yet have sufficient output drive to switch power MOSFETs in excess of 500kHz.

Voltage feed forward compensation is operational over a 5:1 input range and provides fast and accurate response to input voltage changes over a 4:1 range. An accurate volt-second clamp and maximum duty cycle limit are also featured.

Fault protection is provided by pulse by pulse current limiting as well as the ability to latch off after a programmable number of repetitive faults has occurred.

Two UVLO options are offered. UCC35701 family has turn-on and turn-off thresholds of 13V/9V and UCC35702 family has thresholds of 9.6V/8.8V.

The UCC35701/2 and the UCC25701/2 are offered in the 14 pin SOIC (D), 14 pin PDIP (N) or in 14 pin TSSOP (PW) packages. The UCC15701/2 is offered in the 14 pin CDIP (J) package.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 6
Type Title Date
* Datasheet Advanced Voltage Mode Pulse Width Modulator datasheet (Rev. C) Jun. 17, 2005
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
More literature Seminar 300 Topic 8 - Switching Power Supply Design Review Feb. 15, 2001
More literature Seminar 400 Topic 2 - Design of Flyback Transformers and Filter Inductors Feb. 15, 2001
Application note DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode Sep. 05, 1999
Application note U-150 Applying the UCC3570 Voltage-Mode PWM Controller to Both Off-Line Sep. 05, 1999

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

CAD/CAE symbols

Package Pins Download
PDIP (N) 14 View options
SOIC (D) 14 View options
TSSOP (PW) 14 View options

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